Total Bridges
12,698
Public highway bridges in Louisiana
State profile · Above median Poor share
Louisiana bridge safety
According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Louisiana.
- 12,698
- Public bridges
- 38.7%
- Good condition
- 11.5%
- Poor condition
Louisiana holds 12,698 public highway bridges (#24 of 52 by inventory) with a 11.48% Poor share (#8 of 52 by Poor share).
That is 11.5% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 45 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.
Inventory: FHWA NBI 2024 · last ETL August 2026
Good Condition
38.7%
4,919 bridges rated 7-9
-11.3pp vs 50% benchmark
Poor Condition
11.5%
1,458 bridges whose lowest applicable component is rated 0-4
4.0pp vs national avg 7.5%
Louisiana vs national bridge condition
Louisiana - Good condition share 38.7%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Louisiana - Poor-condition share 38.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.
Louisiana in the national condition pattern
Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.
Louisiana vs all states by public bridge inventory
Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges
12,698 24th of 54 higher than 30 of 54 states
States and territories, banded by public bridge inventory size
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · 2024
Read the rank neighborhood for Louisiana
The highlighted point is Louisiana: 12,698 bridges and 11.48% in Poor condition, rank #45 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Louisiana on that same Poor-share ordering:
- North Dakota: 4,255 bridges · 10.98% Poor
- Michigan: 11,371 bridges · 11.27% Poor
- Louisiana: 12,698 bridges · 11.48% Poor
- Pennsylvania: 23,299 bridges · 12.58% Poor
- Guam: 47 bridges · 12.77% Poor
The full national sortable table lives on the rankings page.
Material families in Louisiana
Exclusive FHWA material families across all 12,698 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.
Who maintains Louisiana’s inventory
State agency holds 61.0% of the 12,698 public highway bridges filed under Louisiana in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.
When Louisiana’s bridges were built
Pre-1950 construction accounts for 4.2% of the 12,698 bridges with a recorded original year in Louisiana. Era bands are orthogonal to the Poor-share ranking above.
Condition Distribution
Counties (64)
Acadia 282 Allen 178 Ascension 216 Assumption 68 Avoyelles 147 Beauregard 221 Bienville 190 Bossier 270 Caddo 682 Calcasieu 463 Caldwell 124 Cameron 58 Catahoula 70 Claiborne 148 Concordia 42 De Soto 201 East Baton Rouge 548 East Carroll 55 East Feliciana 133 Evangeline 156 Franklin 131 Grant 209 Iberia 143 Iberville 80 Jackson 163 Jefferson 379 Jefferson Davis 240 LaSalle 195 Lafayette 322 Lafourche 130 Lincoln 171 Livingston 253 Madison 104 Morehouse 136 Natchitoches 313 Orleans 382 Ouachita 337 Plaquemines 34 Pointe Coupee 50 Rapides 523 Red River 63 Richland 207 Sabine 195 St. Bernard 47 St. Charles 82 St. Helena 139 St. James 26 St. John the Baptist 40 St. Landry 317 St. Martin 116 St. Mary 124 St. Tammany 360 Tangipahoa 477 Tensas 52 Terrebonne 215 Union 121 Vermilion 261 Vernon 341 Washington 285 Webster 194 West Baton Rouge 73 West Carroll 88 West Feliciana 108 Winn 220
Louisiana vs nearby ranks
Adjacent states by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Louisiana on the same metric.
ND
North Dakota
10.98% top marginal rate
MI
Michigan
11.27% top marginal rate
LA
Louisiana
11.48% top marginal rate
PA
Pennsylvania
12.58% top marginal rate
GU
Guam
12.77% top marginal rate
Bridges Needing Most Attention in Louisiana
Six lowest-condition bridges in Louisiana, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
Avenue E
PoorOver: DRESSER CANAL
0.10 MI WEST OF LA 1, Lafourche, LA
Built 1952 Load: 0.0 t
VALENTINE BRIDGE R
PoorOver: LAFOURCHE BAYOU
0.01 MI N OF LA 1, Lafourche, LA
Built 1969 Load: 0.0 t
UNNAMED RD
PoorOver: I-10
3.1 MI EAST OF I-510, Orleans, LA
Built 1969 Load: 0.0 t ADT: 28,550
UNNAMED RD
PoorOver: I-10
4.5 MI EAST OF I-510, Orleans, LA
Built 1969 Load: 0.0 t ADT: 28,550
Almonaster Ave
PoorOver: INNER HARBOR NAVIGATION
0.01 MI E OF FRANCE RD, Orleans, LA
Built 1919 Load: 0.0 t
Beiber Rd
PoorOver: NEZPIQUE BAYOU
3.65 Mi W of La 1160, Evangeline, LA
Built 1965 Load: 0.0 t ADT: 70
All Bridges in Louisiana
US0165
GoodOver: BALLARD BAYOU
6.0 MI NORTH OF LA 847, Caldwell, LA
Built 1990 Load: 43.5 t ADT: 11,282
US0425
GoodOver: DEER CREEK
1.80 M N of LA 913, Franklin, LA
Built 1999 Load: 43.5 t ADT: 4,592
US0425
GoodOver: DEER CREEK
2.3 MI SOUTH OF LA 562, Franklin, LA
Built 1999 Load: 43.5 t ADT: 4,500
LA0132
GoodOver: BIG CREEK
3.0 MI WEST OF LA 857, Franklin, LA
Built 1975 Load: 43.5 t ADT: 703
US0084
GoodOver: EARL CREEK
.6 MI EAST OF LA 8, LaSalle, LA
Built 1967 Load: 43.5 t ADT: 2,479
LA0008
GoodOver: CLEAR FORK
.4 MI NORTH OF LA 774, LaSalle, LA
Built 1972 Load: 43.5 t ADT: 344
LA0010
GoodOver: SANDY CK.
1.5 M E of LA 10&LA 951, East Feliciana, LA
Built 1976 Load: 43.5 t ADT: 3,790
LA0030
GoodOver: BAYOU BRAUD
LA0030, Iberville, LA
Built 1968 Load: 43.5 t ADT: 8,090
LA0076
GoodOver: POYDRAS BAYOU
110 Ft E of LA 413, West Baton Rouge, LA
Built 1971 Load: 43.5 t ADT: 7,562
US0190
GoodOver: DUMPLIN CREEK
0.2 M E OF LA 447, Livingston, LA
Built 2000 Load: 43.5 t ADT: 10,296
LA0449
GoodOver: CREEK
2.2 M N OF US 190, Livingston, LA
Built 1972 Load: 43.5 t ADT: 4,609
LA0449
GoodOver: CREEK
0.1 M N OF LA 1024, Livingston, LA
Built 1972 Load: 43.5 t ADT: 4,609
LA0449
GoodOver: CREEK
1.5 M S OF LA 63, Livingston, LA
Built 1973 Load: 43.5 t ADT: 4,609
LA0449
GoodOver: CREEK
0.7 M S OF LA 63, Livingston, LA
Built 1973 Load: 43.5 t ADT: 4,609
US0190
GoodOver: SLOUGH
1.9 M E OF LA 1077, St. Tammany, LA
Built 1941 Load: 43.5 t ADT: 11,418
LA0041
GoodOver: DRAIN
1.1 M NW OF US 11, St. Tammany, LA
Built 1968 Load: 43.5 t ADT: 11,342
LA0041
GoodOver: DRAIN
1.5 M NW OF US 11, St. Tammany, LA
Built 1968 Load: 43.5 t ADT: 11,342
LA0001
GoodOver: BAYOU THUNDER OVERFLOW
6.8 MI E OF LA 3090, Jefferson, LA
Built 2019 Load: 43.7 t ADT: 3,305
13TH ST
GoodOver: AVENUE D CANAL
0.2 MI EAST OF BARATARIA, Jefferson, LA
Built 1996 Load: 43.7 t
LA0001
GoodOver: BAYOU THUNDER
6.2 MI E OF LA 3090, Lafourche, LA
Built 2019 Load: 43.7 t ADT: 3,305
LA0001
GoodOver: BAYOU FERBLANC
5.7 MI E OF LA 3090, Lafourche, LA
Built 2019 Load: 43.7 t ADT: 3,305
Morrison Rd
GoodOver: CANAL
0.2 MI E OF BULLARD AVE, Orleans, LA
Built 1995 Load: 43.7 t
FARMSITE RD
GoodOver: GREEN AVE CANAL
0.3 MI. S. OF LA 39, St. Bernard, LA
Built 2020 Load: 43.7 t ADT: 700
Hapsburg Lane
GoodOver: Coulee
0.45 Mi W of US 167, Lafayette, LA
Built 2023 Load: 43.7 t ADT: 150
Elias G Road
GoodOver: Coulee Ile Des Cannes
0.5 Mi W of LA167, Lafayette, LA
Built 2019 Load: 43.7 t ADT: 774
Hiram St
GoodOver: Yarbor Bayou
0.39 Mi E of LA 357, St. Landry, LA
Built 2011 Load: 43.7 t ADT: 150
Herman Dupuis Rd
GoodOver: Bayou La Rose
0.5 Mi E of LA 352, St. Martin, LA
Built 2023 Load: 43.7 t ADT: 1,232
Thorguson Dr.
GoodOver: SIMMONS BAYOU
0.7 Mi S of US 90, St. Mary, LA
Built 2013 Load: 43.7 t ADT: 1,200
SWAN LAKE RD.(N)
GoodOver: FLAT RIVER
5.1 MI N OF I-220, Bossier, LA
Built 2020 Load: 43.7 t ADT: 2,792
EAVES RD
GoodOver: W BRANCH DUGDEMONA RIVER
1.2 MI W OF LA 507, Lincoln, LA
Built 2019 Load: 43.7 t ADT: 150
BONNIE IDEE ROAD
GoodOver: BONNIE IDEE BAYOU
00.06 MI. W OF LA 599, Morehouse, LA
Built 2019 Load: 43.7 t ADT: 100
REEDS BRIDGE ROAD
GoodOver: CALCASIEU RIVER RELIEF
2.0 MI EAST OF US 165, Allen, LA
Built 2023 Load: 43.7 t ADT: 300
Leo Morrow Rd
GoodOver: Drainage Ditch
1.6 Mi S of LA 361, Avoyelles, LA
Built 2021 Load: 43.7 t ADT: 75
Beauboeuf Rd
GoodOver: Drainage Creek
0.1 Mi NE of LA 1192, Avoyelles, LA
Built 2023 Load: 43.7 t ADT: 100
Chickamaw Rd
GoodOver: BAYOU LAMOURIE
1.2 MI SOUTH OF LA 470, Rapides, LA
Built 2012 Load: 43.7 t ADT: 175
Sneed Rd
GoodOver: Toro Creek
0.4 Ml NW of La 118, Sabine, LA
Built 2020 Load: 43.7 t ADT: 125
LowWater Bridge Rd
GoodOver: BAYOU MACON RIVER
FRANKLIN PH RD NO 399, Franklin, LA
Built 1988 Load: 43.7 t ADT: 40
Helen M. Road
GoodOver: Drain
.001 Mi. E of Helen Rd, East Baton Rouge, LA
Built 2020 Load: 43.7 t ADT: 1,994
Jacock RD
GoodOver: Barrow Creek
1.0 M E of US 61, West Feliciana, LA
Built 2020 Load: 43.7 t ADT: 37
11th Ave.
GoodOver: Miles Branch
0.5 Miles W. of LA 21, St. Tammany, LA
Built 2020 Load: 43.7 t ADT: 800
Black River Dr.
GoodOver: Black River
0.32 Miles North of LA 22, St. Tammany, LA
Built 2021 Load: 43.7 t ADT: 700
MNR STR ON RMP NB
GoodOver: N CAUSEWAY APPR S BOUND
0.68 MI N OF CAUSEWAY BR., St. Tammany, LA
Built 1993 Load: 43.7 t ADT: 500
Vintrano Road
GoodOver: Ponchatoula Creek
0.5 Mi. West of US 51, Tangipahoa, LA
Built 2020 Load: 43.7 t ADT: 145
W LOYOLA
GoodOver: CANAL 7
0.6 Mi N Of VINTAGE ST, Jefferson, LA
Built 2022 Load: 44.1 t ADT: 500
POWER BLVD
GoodOver: CANAL NO 1
0.3 M N OF W ESPLANADE, Jefferson, LA
Built 1989 Load: 44.1 t ADT: 14,025
Park Island Dr.
GoodOver: BAYOU ST. JOHN
0.1 MILE WEST OF ST BERNA, Orleans, LA
Built 2011 Load: 44.1 t
Standard Mill Rd
GoodOver: Bayou Blanc
4.0 MI W of LA 35, Acadia, LA
Built 1999 Load: 44.1 t ADT: 2,448
LA0358
GoodOver: BAYOU PLAQUEMINE BRULE
1.0 MI EAST OF LA 35, St. Landry, LA
Built 2004 Load: 44.1 t ADT: 446
LA0530
GoodOver: BLACK BAYOU
2.7 MI EAST OF LA 538, Caddo, LA
Built 2022 Load: 44.1 t ADT: 177
Dorcheat Rd.
GoodOver: Caney Creek
4.75 Mi. N of US 79/80, Webster, LA
Built 2023 Load: 44.1 t ADT: 1,025
Showing 10,401-10,450 of 12,698 bridges
Related
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
What to do with this
Use Louisiana's inventory picture to drill to a county or a specific span.
- Browse counties in Louisiana and open the highest-Poor shares first. County list
- See where this state sits among peers on Poor-condition share. State rankings
- Compare this state with another jurisdiction on the same measures. State compare
NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Louisiana Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.